Notes on the internal improvements of Pennsylvania,
by W. Hasell Wilson ... and Reminiscences of the first railroad over the Allegheny Mountain, by Solomon W. Roberts ...
Wilson, W. Hasell., Roberts, S. White. (1879). Notes on the internal improvements of Pennsylvania. Philadelphia: Railway world.
Wilson, William Hasell, 1811-1902, and Solomon White Roberts. Notes On the Internal Improvements of Pennsylvania. Philadelphia: Railway world, 1879.
Warning: These citations may not always be complete (especially for serials).